FloodingFacts
Active station

Environment Agency monitoring station

Thornton Heath

Norbury Brook · South Norwood · London

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RiverNorbury BrookWatercourse named by the publisher
CatchmentLondonEnvironment Agency catchment context
Station ID4182THUse this when checking the official source

Published location

Where is Thornton Heath?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

51.394765, -0.097302

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What this reading tells you

It is the latest value published for this monitoring instrument at the stated observation time. The unit mASD is retained from the Environment Agency measure record.

This page does not currently have an approved typical range or warning threshold for this measure, so it does not label the reading as high, normal or low.

Need a current safety answer?

A gauge reading is not a flood warning or a property-risk assessment. Use the official warning service for current alerts and follow emergency-service advice.

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Technical record and provenance
Station reference
4182TH
Station opened
1 Jan 2002
Latitude
51.394765
Longitude
-0.097302
Source
Environment Agency Flood Monitoring API
API retrieval
30 Aug 2026, 22:43
Raw measure identifier
http://environment.data.gov.uk/flood-monitoring/id/measures/4182TH-level-stage-i-15_min-mASD

Source, licence and methodology